Control lever



Oct. 16, 1923. 1,471,272. J. w. LORIMER CONTROL LEVER Filed Sept. 20, 192 2 Patented Got. 16, 1923.

nair terns,

JOHN W. LQRIMER, OF SAN FRANCISCO, CALIFORNIA.

CONTROL LEVER.

Application filed September 20, 1922.

T 0 all whom it mayconcern: I

Be it known that 1, JOHN W. LORIMER, a citizen of the Uni-ted States, and a resident of the city and county of San Francisco,

State of California, have made a new and useful inventionto wit, Improvements in Control Levers; and I do. hereby declare the following to be a full, clear, concise, and exact description of the same.

This invention relates particularly to a control lever for transmitting power eiforts.

An object of the invention is to provide a pivoted lever having a single actuating and controlling handle for obtaining all forward and rearward movements of the lever.

A further object of the invention is to pro vide a control lever that will be superior in point of simplicity and inexpensiveness of construction, facility and convenient in use and general efficiency. Other objects and advantages will appear as this description progresses. I

In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodiedin other forms, and it is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying one sheet of draw- Fig. 1 is a vertical cross-section through a control lever constructed in accordance with my invention, taken on the line 1--1 of Fig. 4. 1

Fig. 2 is an end elevation of Fig. l. v

Fig, 3 is a side elevation of Fig. 2 illustrating the lever handle in pivoted position.

Fig. 4: is a plan section taken through Fig. 1 on the line 1 1.

In detail the construction illustrated in the drawings comprises a hollow lever memher 1 formed of either, open-ended cylindrical tubing, or of drilled stock, provided with bifurcated extensions 2 and 8 through which a pivot pin 4 is adapted to pass. The lower ends of the extensions 2' and 3' are drilled transversely to receive a pivot pin 4 supported midway between its ends in a bearino 5 adapted to have its ends 6 and 7 securec to a relatively stationary object. The extreme lower ends 8 and 9 of the extensions 2 and 3 are suitably drilled, or otherwise arranged, for the purpose of being secured to Serial no. 589,436,

or receiving any article or object on which it is desired to exert movement or effort.

A quadrant or notched bar 10 is adapted to project within and lie between thelever extensions 2 and 3, the ends of-the. notched bar being suitably secured in a stationary manner, or, after the manner ofsecuring the ends 11 and 12 of the quadrant to the feet 6 and 7 of the bearing member 5. Although I have shown and described the notched bar or quadrant 10 extending between the separated ends of the lever 1 it is. to. be clearly understood, as. being within the purview of this invention, to arrange said notched bar either on one side or the other of the lever. A latch 13 consisting of anend slotted plug is slidably confined within the. hollow interior of the lever 1. The slotted portion of the latch 13, is adapted to receive the notched bar 10 therein so that the slanted base 1 1 of said slot will register with the ronfiguration of the bar notches. Thuseach of the spaced .ends 15 and 16 of said latch will engage and move relatively to the opposite side faces of the said notched bar;

The. upper end of the lever 1 is provided spring 18 between the inner ends of the bushing 17 and latch 14. The spring 18- thus exerts a constant pressure on the-latch 14: and maintains said latch in secure engagement with the notched bar 10.

The exterior of the lever 1 has a raised and off-set projection 19 thereon to which the projecting lug 20 formed on the end of the hollow handle 21 is adapted to be pivotally engaged by the pin 22. The lower end of the hollow handle 21 is adapted to abut the upper end of the lever.1 so that the axes of said lever and handle 21 will lie in approximate registry, said lower end ofithe handle 21 having an internal annular shoulder 23 therein the opening of which registers with the central passage through the bushing 17. A machine screw 241 is adapted to project through the reduced diametered end of the handle 21, through the hollow bushing 17, and expansion spring 18 and to be screwed into engagement with a tapped opening provided therefor in the latch 13. The projecting head 25 of the screw 14 is adapted to lie within the hollow interior of the handle 21 and to rest upon the shouldered end 23 of said handle.

Under normal operating conditions the latch 14: would be kept in engagement with notched bar 10 by the expanding action of the spring 18. Movement of the handle 21 in the direction of the arrow a as shown in Fig. 1, would cause the said connected handle and lever to move as in integral unit, the latch 14L riding upwardly on the inclined surface of each notch in the bar 10 to cornpress the spring 18 and to relieve the spring tension when dropped into the next ad acent bar notch. Movement of the handle in the reverse direction, of the arrow 6 as shown in Figs. 1' and 3, would first cause the handle 21 to pivot about its pin 22 away from abutment with the end of the lever 1, lifting the head 25 of the screw 14 and, causing the latch 1% to be lifted against the tension of the spring 1 1 out of contact with the notch 10. As the handle 21 assumes the position shown in Fig. 3 and the latch is lifted from the notched bar reverse movement of the lever 1 is obtainable relative to the said notched bar. After discommunieating the moving effort in the reverse direction, the spring 18 tends to expand forcing the latch 14: into engagement with the notched bar 10 and. placing the lever 1 and handle 21 in axial alignment.

A stop member 261 is provided on the under side of the handle lug 20 to engage the lever 1 and restrict and limit radial movement to the handle 21 relative to the said lever .1.

I have found that a lever constructed and arranged in the manner described, with a single handle member, may be actuated and controlled for movement either forwardly or rearwardly with the same precision but in a much more efficient and effective manner than that which accompanies movement of the conventional brake or control lever hav ing a depending auxiliary latching means thereon.

aving thus described this invention, what I claim and desire to secure by Let ters Patent is 1. A device such as described, comprising a hollo lever arranged relative to a notched bar; a handle pivoted to said hollow lever, having a hollow center and provided with internal shoulder thereon; and a latch slidably confined within said hollow lever, hav ing an end engageable with said notched bar. said latch-having its opposite end related to the internal shoulder in said hollow handle, whereby said latch may be manually disengaged from said notchedbar when moved in one direction.

2. A device such as described, comprising a hollow lever pivoted relative to a notched quadrant; a latch slidably confined in said lever and engageable with said notched quadrant, an enlargement on the free end of said latch; spring means, around said latch within said hollow lever, to hold said latch in engagement with said notched quadrant; a hollow handle, having a shouldered interior, pivoted to said lever in substantially aligned registry with the axis of said lever, whereby the enlargement on said latch will engagethe shouldered interior of said handle to disengage said latch from said notched quadrant.

In testimony whereof, I have hereunto set my hand at Oakland, California, this 13th day of September, 1922.

JOHN W. LORIMER.

In presence of' LINcoLN V. JOHNSON. 

